Here is a cute teacher gift: crocheted pencil bookmarks. They make up quickly, use just single crochet, and use up yarn scraps, or those cute tiny skeins. I made these in May of 2015 using this pattern from LittleOwlHut on Ravelry.

Important note, as you crochet these curl. To get them flat, steaming them works well. You can also iron them between two thin layers of cotton. If you choose to do blocking (getting them wet and laying flat to dry), pin them down well.